Tests for composition audio effects

Add tests for the changes to AudioGraph that support composition audio effects PiperOrigin-RevId: 610691768
2026-04-22 14:05:55 +00:00 · 2024-02-27 03:01:55 -08:00 · 2024-02-27 03:01:55 -08:00 · 0e0e1c4f1a
commit 0e0e1c4f1a
parent 477ace1be9
13 changed files with 2209 additions and 0 deletions
--- a/libraries/test_data/src/test/assets/transformerdumps/mp4/sample_twos_pcm.mp4/silenceFromEffect.dump
+++ b/libraries/test_data/src/test/assets/transformerdumps/mp4/sample_twos_pcm.mp4/silenceFromEffect.dump
@ -0,0 +1,373 @@
+format audio:
+  averageBitrate = 131072
+  sampleMimeType = audio/mp4a-latm
+  channelCount = 1
+  sampleRate = 44100
+  pcmEncoding = 2
+  metadata = entries=[xyz: latitude=40.68, longitude=-74.5, Mp4Timestamp: creation time=0, modification time=0, timescale=1000]
+format video:
+  id = 1
+  sampleMimeType = video/avc
+  codecs = avc1.64001F
+  maxInputSize = 36722
+  width = 1080
+  height = 720
+  frameRate = 29.970028
+  colorInfo:
+    lumaBitdepth = 8
+    chromaBitdepth = 8
+  metadata = entries=[xyz: latitude=40.68, longitude=-74.5, Mp4Timestamp: creation time=0, modification time=0, timescale=1000]
+  initializationData:
+    data = length 29, hash 4746B5D9
+    data = length 10, hash 7A0D0F2B
+container metadata = entries=[xyz: latitude=40.68, longitude=-74.5, Mp4Timestamp: creation time=0, modification time=0, timescale=1000]
+container metadata = entries=[xyz: latitude=40.68, longitude=-74.5, Mp4Timestamp: creation time=0, modification time=0, timescale=1000]
+sample:
+  trackType = audio
+  dataHashCode = 1742602241
+  size = 4096
+  isKeyFrame = true
+  presentationTimeUs = 0
+sample:
+  trackType = audio
+  dataHashCode = -1276182527
+  size = 2048
+  isKeyFrame = true
+  presentationTimeUs = 46439
+sample:
+  trackType = audio
+  dataHashCode = 1742602241
+  size = 4096
+  isKeyFrame = true
+  presentationTimeUs = 69659
+sample:
+  trackType = audio
+  dataHashCode = -1276182527
+  size = 2048
+  isKeyFrame = true
+  presentationTimeUs = 116099
+sample:
+  trackType = audio
+  dataHashCode = 1742602241
+  size = 4096
+  isKeyFrame = true
+  presentationTimeUs = 139319
+sample:
+  trackType = audio
+  dataHashCode = -1276182527
+  size = 2048
+  isKeyFrame = true
+  presentationTimeUs = 185759
+sample:
+  trackType = audio
+  dataHashCode = 1742602241
+  size = 4096
+  isKeyFrame = true
+  presentationTimeUs = 208979
+sample:
+  trackType = audio
+  dataHashCode = -1276182527
+  size = 2048
+  isKeyFrame = true
+  presentationTimeUs = 255419
+sample:
+  trackType = audio
+  dataHashCode = -1276182527
+  size = 2048
+  isKeyFrame = true
+  presentationTimeUs = 278639
+sample:
+  trackType = audio
+  dataHashCode = 1742602241
+  size = 4096
+  isKeyFrame = true
+  presentationTimeUs = 301859
+sample:
+  trackType = audio
+  dataHashCode = -1276182527
+  size = 2048
+  isKeyFrame = true
+  presentationTimeUs = 348299
+sample:
+  trackType = audio
+  dataHashCode = 1742602241
+  size = 4096
+  isKeyFrame = true
+  presentationTimeUs = 371519
+sample:
+  trackType = audio
+  dataHashCode = -1276182527
+  size = 2048
+  isKeyFrame = true
+  presentationTimeUs = 417959
+sample:
+  trackType = audio
+  dataHashCode = 1742602241
+  size = 4096
+  isKeyFrame = true
+  presentationTimeUs = 441179
+sample:
+  trackType = audio
+  dataHashCode = 1737035649
+  size = 1092
+  isKeyFrame = true
+  presentationTimeUs = 487619
+sample:
+  trackType = audio
+  dataHashCode = -345689983
+  size = 3004
+  isKeyFrame = true
+  presentationTimeUs = 500000
+sample:
+  trackType = audio
+  dataHashCode = 1742602241
+  size = 4096
+  isKeyFrame = true
+  presentationTimeUs = 534058
+sample:
+  trackType = audio
+  dataHashCode = -1276182527
+  size = 2048
+  isKeyFrame = true
+  presentationTimeUs = 580498
+sample:
+  trackType = audio
+  dataHashCode = 1742602241
+  size = 4096
+  isKeyFrame = true
+  presentationTimeUs = 603718
+sample:
+  trackType = audio
+  dataHashCode = -1276182527
+  size = 2048
+  isKeyFrame = true
+  presentationTimeUs = 650158
+sample:
+  trackType = audio
+  dataHashCode = 1742602241
+  size = 4096
+  isKeyFrame = true
+  presentationTimeUs = 673378
+sample:
+  trackType = audio
+  dataHashCode = -1276182527
+  size = 2048
+  isKeyFrame = true
+  presentationTimeUs = 719818
+sample:
+  trackType = audio
+  dataHashCode = 1742602241
+  size = 4096
+  isKeyFrame = true
+  presentationTimeUs = 743038
+sample:
+  trackType = audio
+  dataHashCode = -1276182527
+  size = 2048
+  isKeyFrame = true
+  presentationTimeUs = 789478
+sample:
+  trackType = audio
+  dataHashCode = -1276182527
+  size = 2048
+  isKeyFrame = true
+  presentationTimeUs = 812698
+sample:
+  trackType = audio
+  dataHashCode = -809762815
+  size = 8192
+  isKeyFrame = true
+  presentationTimeUs = 835918
+sample:
+  trackType = audio
+  dataHashCode = 820010753
+  size = 6280
+  isKeyFrame = true
+  presentationTimeUs = 928798
+sample:
+  trackType = audio
+  dataHashCode = 521969921
+  size = 1912
+  isKeyFrame = true
+  presentationTimeUs = 1000000
+sample:
+  trackType = video
+  dataHashCode = -770308242
+  size = 36692
+  isKeyFrame = true
+  presentationTimeUs = 0
+sample:
+  trackType = video
+  dataHashCode = -732087136
+  size = 5312
+  isKeyFrame = false
+  presentationTimeUs = 66733
+sample:
+  trackType = video
+  dataHashCode = 468156717
+  size = 599
+  isKeyFrame = false
+  presentationTimeUs = 33366
+sample:
+  trackType = video
+  dataHashCode = 1150349584
+  size = 7735
+  isKeyFrame = false
+  presentationTimeUs = 200200
+sample:
+  trackType = video
+  dataHashCode = 1443582006
+  size = 987
+  isKeyFrame = false
+  presentationTimeUs = 133466
+sample:
+  trackType = video
+  dataHashCode = -310585145
+  size = 673
+  isKeyFrame = false
+  presentationTimeUs = 100100
+sample:
+  trackType = video
+  dataHashCode = 807460688
+  size = 523
+  isKeyFrame = false
+  presentationTimeUs = 166833
+sample:
+  trackType = video
+  dataHashCode = 1936487090
+  size = 6061
+  isKeyFrame = false
+  presentationTimeUs = 333666
+sample:
+  trackType = video
+  dataHashCode = -32297181
+  size = 992
+  isKeyFrame = false
+  presentationTimeUs = 266933
+sample:
+  trackType = video
+  dataHashCode = 1529616406
+  size = 623
+  isKeyFrame = false
+  presentationTimeUs = 233566
+sample:
+  trackType = video
+  dataHashCode = 1949198785
+  size = 421
+  isKeyFrame = false
+  presentationTimeUs = 300300
+sample:
+  trackType = video
+  dataHashCode = -147880287
+  size = 4899
+  isKeyFrame = false
+  presentationTimeUs = 433766
+sample:
+  trackType = video
+  dataHashCode = 1369083472
+  size = 568
+  isKeyFrame = false
+  presentationTimeUs = 400400
+sample:
+  trackType = video
+  dataHashCode = 965782073
+  size = 620
+  isKeyFrame = false
+  presentationTimeUs = 367033
+sample:
+  trackType = video
+  dataHashCode = -261176150
+  size = 5450
+  isKeyFrame = false
+  presentationTimeUs = 567233
+sample:
+  trackType = video
+  dataHashCode = -1830836678
+  size = 1051
+  isKeyFrame = false
+  presentationTimeUs = 500500
+sample:
+  trackType = video
+  dataHashCode = 1767407540
+  size = 874
+  isKeyFrame = false
+  presentationTimeUs = 467133
+sample:
+  trackType = video
+  dataHashCode = 918440283
+  size = 781
+  isKeyFrame = false
+  presentationTimeUs = 533866
+sample:
+  trackType = video
+  dataHashCode = -1408463661
+  size = 4725
+  isKeyFrame = false
+  presentationTimeUs = 700700
+sample:
+  trackType = video
+  dataHashCode = 1569455924
+  size = 1022
+  isKeyFrame = false
+  presentationTimeUs = 633966
+sample:
+  trackType = video
+  dataHashCode = -1723778407
+  size = 790
+  isKeyFrame = false
+  presentationTimeUs = 600600
+sample:
+  trackType = video
+  dataHashCode = 1578275472
+  size = 610
+  isKeyFrame = false
+  presentationTimeUs = 667333
+sample:
+  trackType = video
+  dataHashCode = 1989768395
+  size = 2751
+  isKeyFrame = false
+  presentationTimeUs = 834166
+sample:
+  trackType = video
+  dataHashCode = -1215674502
+  size = 745
+  isKeyFrame = false
+  presentationTimeUs = 767433
+sample:
+  trackType = video
+  dataHashCode = -814473606
+  size = 621
+  isKeyFrame = false
+  presentationTimeUs = 734066
+sample:
+  trackType = video
+  dataHashCode = 498370894
+  size = 505
+  isKeyFrame = false
+  presentationTimeUs = 800800
+sample:
+  trackType = video
+  dataHashCode = -1051506468
+  size = 1268
+  isKeyFrame = false
+  presentationTimeUs = 967633
+sample:
+  trackType = video
+  dataHashCode = -1025604144
+  size = 880
+  isKeyFrame = false
+  presentationTimeUs = 900900
+sample:
+  trackType = video
+  dataHashCode = -913586520
+  size = 530
+  isKeyFrame = false
+  presentationTimeUs = 867533
+sample:
+  trackType = video
+  dataHashCode = 1340459242
+  size = 568
+  isKeyFrame = false
+  presentationTimeUs = 934266
+released = true
--- a/libraries/test_data/src/test/assets/transformerdumps/mp4/sowt-with-video.mov/silenceFromEffect.dump
+++ b/libraries/test_data/src/test/assets/transformerdumps/mp4/sowt-with-video.mov/silenceFromEffect.dump
--- a/libraries/test_data/src/test/assets/transformerdumps/wav/sample.wav/48000hzViaComposition.dump
+++ b/libraries/test_data/src/test/assets/transformerdumps/wav/sample.wav/48000hzViaComposition.dump
@ -0,0 +1,73 @@
+format audio:
+  averageBitrate = 131072
+  sampleMimeType = audio/mp4a-latm
+  channelCount = 1
+  sampleRate = 48000
+  pcmEncoding = 2
+sample:
+  trackType = audio
+  dataHashCode = -206878443
+  size = 9598
+  isKeyFrame = true
+  presentationTimeUs = 0
+sample:
+  trackType = audio
+  dataHashCode = 1925380271
+  size = 9600
+  isKeyFrame = true
+  presentationTimeUs = 99979
+sample:
+  trackType = audio
+  dataHashCode = -1463691457
+  size = 9600
+  isKeyFrame = true
+  presentationTimeUs = 199979
+sample:
+  trackType = audio
+  dataHashCode = -1949646832
+  size = 9600
+  isKeyFrame = true
+  presentationTimeUs = 299979
+sample:
+  trackType = audio
+  dataHashCode = 448289446
+  size = 9600
+  isKeyFrame = true
+  presentationTimeUs = 399979
+sample:
+  trackType = audio
+  dataHashCode = 1075917616
+  size = 9600
+  isKeyFrame = true
+  presentationTimeUs = 499979
+sample:
+  trackType = audio
+  dataHashCode = -2108784941
+  size = 9600
+  isKeyFrame = true
+  presentationTimeUs = 599979
+sample:
+  trackType = audio
+  dataHashCode = 1861606067
+  size = 9600
+  isKeyFrame = true
+  presentationTimeUs = 699979
+sample:
+  trackType = audio
+  dataHashCode = -1038569478
+  size = 9600
+  isKeyFrame = true
+  presentationTimeUs = 799979
+sample:
+  trackType = audio
+  dataHashCode = 646441790
+  size = 9600
+  isKeyFrame = true
+  presentationTimeUs = 899979
+sample:
+  trackType = audio
+  dataHashCode = 340
+  size = 2
+  isKeyFrame = true
+  presentationTimeUs = 999979
+released = true
--- a/libraries/test_data/src/test/assets/transformerdumps/wav/sample.wav/mixed_sample.wav_48000hz.dump
+++ b/libraries/test_data/src/test/assets/transformerdumps/wav/sample.wav/mixed_sample.wav_48000hz.dump
@ -0,0 +1,73 @@
+format audio:
+  averageBitrate = 131072
+  sampleMimeType = audio/mp4a-latm
+  channelCount = 1
+  sampleRate = 48000
+  pcmEncoding = 2
+sample:
+  trackType = audio
+  dataHashCode = 1079020216
+  size = 9598
+  isKeyFrame = true
+  presentationTimeUs = 0
+sample:
+  trackType = audio
+  dataHashCode = -1587539971
+  size = 9600
+  isKeyFrame = true
+  presentationTimeUs = 99979
+sample:
+  trackType = audio
+  dataHashCode = 1662487784
+  size = 9600
+  isKeyFrame = true
+  presentationTimeUs = 199979
+sample:
+  trackType = audio
+  dataHashCode = 2046052835
+  size = 9600
+  isKeyFrame = true
+  presentationTimeUs = 299979
+sample:
+  trackType = audio
+  dataHashCode = 662989576
+  size = 9600
+  isKeyFrame = true
+  presentationTimeUs = 399979
+sample:
+  trackType = audio
+  dataHashCode = 493382594
+  size = 9600
+  isKeyFrame = true
+  presentationTimeUs = 499979
+sample:
+  trackType = audio
+  dataHashCode = -936959003
+  size = 9600
+  isKeyFrame = true
+  presentationTimeUs = 599979
+sample:
+  trackType = audio
+  dataHashCode = -373052102
+  size = 9600
+  isKeyFrame = true
+  presentationTimeUs = 699979
+sample:
+  trackType = audio
+  dataHashCode = -2008343760
+  size = 9600
+  isKeyFrame = true
+  presentationTimeUs = 799979
+sample:
+  trackType = audio
+  dataHashCode = -1783150403
+  size = 9600
+  isKeyFrame = true
+  presentationTimeUs = 899979
+sample:
+  trackType = audio
+  dataHashCode = -280
+  size = 2
+  isKeyFrame = true
+  presentationTimeUs = 999979
+released = true
--- a/libraries/test_data/src/test/assets/transformerdumps/wav/sample.wav/silenceFromEffect.dump
+++ b/libraries/test_data/src/test/assets/transformerdumps/wav/sample.wav/silenceFromEffect.dump
@ -0,0 +1,67 @@
+format audio:
+  averageBitrate = 131072
+  sampleMimeType = audio/mp4a-latm
+  channelCount = 1
+  sampleRate = 44100
+  pcmEncoding = 2
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 0
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 100000
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 200000
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 300000
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 400000
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 500000
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 600000
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 700000
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 800000
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 900000
+released = true
--- a/libraries/test_data/src/test/assets/transformerdumps/wav/sample_ima_adpcm.wav/silenceFromEffect.dump
+++ b/libraries/test_data/src/test/assets/transformerdumps/wav/sample_ima_adpcm.wav/silenceFromEffect.dump
@ -0,0 +1,73 @@
+format audio:
+  averageBitrate = 131072
+  sampleMimeType = audio/mp4a-latm
+  channelCount = 1
+  sampleRate = 44100
+  pcmEncoding = 2
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 0
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 100000
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 200000
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 300000
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 400000
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 500000
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 600000
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 700000
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 800000
+sample:
+  trackType = audio
+  dataHashCode = -1157240447
+  size = 8820
+  isKeyFrame = true
+  presentationTimeUs = 900000
+sample:
+  trackType = audio
+  dataHashCode = -1163604095
+  size = 1604
+  isKeyFrame = true
+  presentationTimeUs = 1000000
+released = true
--- a/libraries/test_data/src/test/assets/transformerdumps/wav/sample_rf64.wav/original_sample.wav_highPitch.dump
+++ b/libraries/test_data/src/test/assets/transformerdumps/wav/sample_rf64.wav/original_sample.wav_highPitch.dump
@ -0,0 +1,97 @@
+format audio:
+  averageBitrate = 131072
+  sampleMimeType = audio/mp4a-latm
+  channelCount = 2
+  sampleRate = 48000
+  pcmEncoding = 2
+sample:
+  trackType = audio
+  dataHashCode = -226169394
+  size = 15528
+  isKeyFrame = true
+  presentationTimeUs = 0
+sample:
+  trackType = audio
+  dataHashCode = -1654106973
+  size = 17436
+  isKeyFrame = true
+  presentationTimeUs = 80875
+sample:
+  trackType = audio
+  dataHashCode = 1078555669
+  size = 19384
+  isKeyFrame = true
+  presentationTimeUs = 171687
+sample:
+  trackType = audio
+  dataHashCode = -1783495042
+  size = 8904
+  isKeyFrame = true
+  presentationTimeUs = 272645
+sample:
+  trackType = audio
+  dataHashCode = 1415708326
+  size = 19232
+  isKeyFrame = true
+  presentationTimeUs = 319020
+sample:
+  trackType = audio
+  dataHashCode = -907128755
+  size = 9688
+  isKeyFrame = true
+  presentationTimeUs = 419187
+sample:
+  trackType = audio
+  dataHashCode = -855583041
+  size = 28564
+  isKeyFrame = true
+  presentationTimeUs = 469645
+sample:
+  trackType = audio
+  dataHashCode = -141401047
+  size = 19388
+  isKeyFrame = true
+  presentationTimeUs = 618416
+sample:
+  trackType = audio
+  dataHashCode = -1258167167
+  size = 19680
+  isKeyFrame = true
+  presentationTimeUs = 719395
+sample:
+  trackType = audio
+  dataHashCode = -1950277707
+  size = 19796
+  isKeyFrame = true
+  presentationTimeUs = 821895
+sample:
+  trackType = audio
+  dataHashCode = -71854735
+  size = 9096
+  isKeyFrame = true
+  presentationTimeUs = 925000
+sample:
+  trackType = audio
+  dataHashCode = -1667813033
+  size = 28344
+  isKeyFrame = true
+  presentationTimeUs = 972375
+sample:
+  trackType = audio
+  dataHashCode = 473686109
+  size = 18848
+  isKeyFrame = true
+  presentationTimeUs = 1120000
+sample:
+  trackType = audio
+  dataHashCode = 283620169
+  size = 19384
+  isKeyFrame = true
+  presentationTimeUs = 1218166
+sample:
+  trackType = audio
+  dataHashCode = 581004623
+  size = 5668
+  isKeyFrame = true
+  presentationTimeUs = 1319125
+released = true
--- a/libraries/test_data/src/test/assets/transformerdumps/wav/sample_rf64.wav/silenceFromEffect.dump
+++ b/libraries/test_data/src/test/assets/transformerdumps/wav/sample_rf64.wav/silenceFromEffect.dump
@ -0,0 +1,31 @@
+format audio:
+  averageBitrate = 131072
+  sampleMimeType = audio/mp4a-latm
+  channelCount = 2
+  sampleRate = 48000
+  pcmEncoding = 2
+sample:
+  trackType = audio
+  dataHashCode = -119496703
+  size = 19200
+  isKeyFrame = true
+  presentationTimeUs = 0
+sample:
+  trackType = audio
+  dataHashCode = -119496703
+  size = 19200
+  isKeyFrame = true
+  presentationTimeUs = 100000
+sample:
+  trackType = audio
+  dataHashCode = -119496703
+  size = 19200
+  isKeyFrame = true
+  presentationTimeUs = 200000
+sample:
+  trackType = audio
+  dataHashCode = 197067009
+  size = 9336
+  isKeyFrame = true
+  presentationTimeUs = 300000
+released = true
--- a/libraries/transformer/src/androidTest/java/androidx/media3/transformer/TransformerEndToEndTest.java
+++ b/libraries/transformer/src/androidTest/java/androidx/media3/transformer/TransformerEndToEndTest.java
@ -1045,6 +1045,45 @@ public class TransformerEndToEndTest {
    assertThat(result.exportResult.channelCount).isEqualTo(2);
  }

+  @Test
+  public void audioComposition_noEffects_transmuxes() throws Exception {
+    String testId = "audioComposition_noEffects_transmuxes";
+    EditedMediaItem editedMediaItem =
+        new EditedMediaItem.Builder(MediaItem.fromUri(Uri.parse(MP4_ASSET_URI_STRING)))
+            .setRemoveVideo(true)
+            .build();
+    Composition composition =
+        new Composition.Builder(new EditedMediaItemSequence(editedMediaItem)).build();
+
+    ExportTestResult result =
+        new TransformerAndroidTestRunner.Builder(context, new Transformer.Builder(context).build())
+            .build()
+            .run(testId, composition);
+
+    assertThat(result.exportResult.audioConversionProcess).isEqualTo(CONVERSION_PROCESS_TRANSMUXED);
+  }
+
+  @Test
+  public void audioComposition_compositionEffects_transcodes() throws Exception {
+    String testId = "audioComposition_compositionEffects_transcodes";
+    EditedMediaItem editedMediaItem =
+        new EditedMediaItem.Builder(MediaItem.fromUri(Uri.parse(MP4_ASSET_URI_STRING)))
+            .setRemoveVideo(true)
+            .build();
+    Composition composition =
+        new Composition.Builder(new EditedMediaItemSequence(editedMediaItem))
+            .setEffects(
+                new Effects(ImmutableList.of(createSonic(/* pitch= */ 2f)), ImmutableList.of()))
+            .build();
+
+    ExportTestResult result =
+        new TransformerAndroidTestRunner.Builder(context, new Transformer.Builder(context).build())
+            .build()
+            .run(testId, composition);
+
+    assertThat(result.exportResult.audioConversionProcess).isEqualTo(CONVERSION_PROCESS_TRANSCODED);
+  }
+
  @Test
  public void transcode_withOutputVideoMimeTypeAv1_completesSuccessfully() throws Exception {
    if (AndroidTestUtil.skipAndLogIfFormatsUnsupported(
--- a/libraries/transformer/src/test/java/androidx/media3/transformer/CompositionExportTest.java
+++ b/libraries/transformer/src/test/java/androidx/media3/transformer/CompositionExportTest.java
@ -35,6 +35,7 @@ import static com.google.common.truth.Truth.assertThat;
 import android.content.Context;
 import androidx.media3.common.MediaItem;
 import androidx.media3.common.MimeTypes;
+import androidx.media3.common.audio.SonicAudioProcessor;
 import androidx.media3.test.utils.DumpFileAsserts;
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
@ -315,6 +316,62 @@ public class CompositionExportTest {
            "loopingAudio" + getFileName(FILE_AUDIO_RAW_VIDEO)));
  }

+  @Test
+  public void start_adjustSampleRateWithComposition_completesSuccessfully() throws Exception {
+    SonicAudioProcessor sonicAudioProcessor = new SonicAudioProcessor();
+    sonicAudioProcessor.setOutputSampleRateHz(48000);
+    Transformer transformer =
+        createTransformerBuilder(muxerFactory, /* enableFallback= */ false).build();
+    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_RAW);
+    EditedMediaItem editedMediaItem = new EditedMediaItem.Builder(mediaItem).build();
+    Composition composition =
+        new Composition.Builder(new EditedMediaItemSequence(editedMediaItem))
+            .setEffects(createAudioEffects(sonicAudioProcessor))
+            .build();
+
+    transformer.start(composition, outputDir.newFile().getPath());
+    TransformerTestRunner.runLooper(transformer);
+
+    // TODO: b/311614619 - Use the same dump as
+    //  {@link MediaItemExportTest#start_adjustSampleRate_completesSuccessfully}.
+    DumpFileAsserts.assertOutput(
+        context,
+        muxerFactory.getCreatedMuxer(),
+        getDumpFileName(
+            /* originalFileName= */ FILE_AUDIO_RAW,
+            /* modifications...= */ "48000hzViaComposition"));
+  }
+
+  @Test
+  public void start_compositionOfConcurrentAudio_changesSampleRateWithEffect() throws Exception {
+    SonicAudioProcessor sonicAudioProcessor = new SonicAudioProcessor();
+    sonicAudioProcessor.setOutputSampleRateHz(48000);
+    Transformer transformer =
+        createTransformerBuilder(muxerFactory, /* enableFallback= */ false).build();
+    EditedMediaItem rawAudioEditedMediaItem =
+        new EditedMediaItem.Builder(MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_RAW)).build();
+    Composition composition =
+        new Composition.Builder(
+                new EditedMediaItemSequence(rawAudioEditedMediaItem),
+                new EditedMediaItemSequence(rawAudioEditedMediaItem))
+            .setEffects(createAudioEffects(sonicAudioProcessor))
+            .build();
+
+    transformer.start(composition, outputDir.newFile().getPath());
+    ExportResult exportResult = TransformerTestRunner.runLooper(transformer);
+
+    assertThat(exportResult.processedInputs).hasSize(2);
+    assertThat(exportResult.sampleRate).isEqualTo(48000);
+    DumpFileAsserts.assertOutput(
+        context,
+        muxerFactory.getCreatedMuxer(),
+        getDumpFileName(
+            FILE_AUDIO_RAW,
+            /* modifications...= */ "mixed",
+            getFileName(FILE_AUDIO_RAW),
+            "48000hz"));
+  }
+
  private static String getFileName(String filePath) {
    int lastSeparator = filePath.lastIndexOf("/");
    return filePath.substring(lastSeparator + 1);
--- a/libraries/transformer/src/test/java/androidx/media3/transformer/ParameterizedItemExportTest.java
+++ b/libraries/transformer/src/test/java/androidx/media3/transformer/ParameterizedItemExportTest.java
@ -25,7 +25,9 @@ import static androidx.media3.transformer.TestUtil.FILE_AUDIO_VIDEO;
 import static androidx.media3.transformer.TestUtil.FILE_VIDEO_ONLY;
 import static androidx.media3.transformer.TestUtil.addAudioDecoders;
 import static androidx.media3.transformer.TestUtil.addAudioEncoders;
+import static androidx.media3.transformer.TestUtil.createAudioEffects;
 import static androidx.media3.transformer.TestUtil.createTransformerBuilder;
+import static androidx.media3.transformer.TestUtil.createVolumeScalingAudioProcessor;
 import static androidx.media3.transformer.TestUtil.getDumpFileName;
 import static androidx.media3.transformer.TestUtil.removeEncodersAndDecoders;
 import static org.junit.Assume.assumeFalse;
@ -137,4 +139,53 @@ public final class ParameterizedItemExportTest {
        muxerFactory.getCreatedMuxer(),
        getDumpFileName(assetFile, /* modifications...= */ "silence"));
  }
+
+  @Test
+  public void generateSilenceWithItemEffect() throws Exception {
+    assumeFalse(VIDEO_ONLY_ASSETS.contains(assetFile));
+    assumeFalse(
+        "Audio effects in Robolectric tests require PCM input",
+        assetFile.equals(FILE_AUDIO_VIDEO) || assetFile.equals(FILE_AUDIO_AMR_NB));
+    Transformer transformer =
+        createTransformerBuilder(muxerFactory, /* enableFallback= */ false).build();
+
+    EditedMediaItem item =
+        new EditedMediaItem.Builder(MediaItem.fromUri(ASSET_URI_PREFIX + assetFile))
+            .setEffects(createAudioEffects(createVolumeScalingAudioProcessor(0f)))
+            .build();
+    Composition composition = new Composition.Builder(new EditedMediaItemSequence(item)).build();
+
+    transformer.start(composition, outputDir.newFile().getPath());
+    TransformerTestRunner.runLooper(transformer);
+
+    DumpFileAsserts.assertOutput(
+        ApplicationProvider.getApplicationContext(),
+        muxerFactory.getCreatedMuxer(),
+        getDumpFileName(assetFile, /* modifications...= */ "silenceFromEffect"));
+  }
+
+  @Test
+  public void generateSilenceWithCompositionEffect() throws Exception {
+    assumeFalse(VIDEO_ONLY_ASSETS.contains(assetFile));
+    assumeFalse(
+        "Audio effects in Robolectric tests require PCM input",
+        assetFile.equals(FILE_AUDIO_VIDEO) || assetFile.equals(FILE_AUDIO_AMR_NB));
+    Transformer transformer =
+        createTransformerBuilder(muxerFactory, /* enableFallback= */ false).build();
+
+    EditedMediaItem item =
+        new EditedMediaItem.Builder(MediaItem.fromUri(ASSET_URI_PREFIX + assetFile)).build();
+    Composition composition =
+        new Composition.Builder(new EditedMediaItemSequence(item))
+            .setEffects(createAudioEffects(createVolumeScalingAudioProcessor(0f)))
+            .build();
+
+    transformer.start(composition, outputDir.newFile().getPath());
+    TransformerTestRunner.runLooper(transformer);
+
+    DumpFileAsserts.assertOutput(
+        ApplicationProvider.getApplicationContext(),
+        muxerFactory.getCreatedMuxer(),
+        getDumpFileName(assetFile, /* modifications...= */ "silenceFromEffect"));
+  }
 }
--- a/libraries/transformer/src/test/java/androidx/media3/transformer/SequenceExportTest.java
+++ b/libraries/transformer/src/test/java/androidx/media3/transformer/SequenceExportTest.java
@ -25,6 +25,7 @@ import static androidx.media3.transformer.TestUtil.FILE_AUDIO_VIDEO_INCREASING_T
 import static androidx.media3.transformer.TestUtil.addAudioDecoders;
 import static androidx.media3.transformer.TestUtil.addAudioEncoders;
 import static androidx.media3.transformer.TestUtil.createAudioEffects;
+import static androidx.media3.transformer.TestUtil.createChannelCountChangingAudioProcessor;
 import static androidx.media3.transformer.TestUtil.createPitchChangingAudioProcessor;
 import static androidx.media3.transformer.TestUtil.createTransformerBuilder;
 import static androidx.media3.transformer.TestUtil.getDumpFileName;
@ -34,6 +35,7 @@ import static com.google.common.truth.Truth.assertThat;
 import android.content.Context;
 import androidx.media3.common.MediaItem;
 import androidx.media3.common.MimeTypes;
+import androidx.media3.common.audio.SonicAudioProcessor;
 import androidx.media3.effect.RgbFilter;
 import androidx.media3.test.utils.DumpFileAsserts;
 import androidx.test.core.app.ApplicationProvider;
@ -642,4 +644,70 @@ public final class SequenceExportTest {
            /* modifications...= */ "highPitch",
            "sample.wavLowPitch"));
  }
+
+  @Test
+  public void concatenateTwoAudioItems_withDiffFormatAndCompositionEffects_completesSuccessfully()
+      throws Exception {
+    Transformer transformer =
+        createTransformerBuilder(muxerFactory, /* enableFallback= */ false).build();
+    MediaItem stereo48000Audio =
+        MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_RAW_STEREO_48000KHZ);
+    MediaItem mono44100Audio = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_RAW);
+    Composition composition =
+        new Composition.Builder(
+                new EditedMediaItemSequence(
+                    new EditedMediaItem.Builder(stereo48000Audio).build(),
+                    new EditedMediaItem.Builder(mono44100Audio).build()))
+            .setEffects(createAudioEffects(createPitchChangingAudioProcessor(2f)))
+            .build();
+
+    transformer.start(composition, outputDir.newFile().getPath());
+    ExportResult exportResult = TransformerTestRunner.runLooper(transformer);
+
+    assertThat(exportResult.sampleRate).isEqualTo(48_000);
+    assertThat(exportResult.channelCount).isEqualTo(2);
+    DumpFileAsserts.assertOutput(
+        context,
+        muxerFactory.getCreatedMuxer(),
+        getDumpFileName(
+            /* originalFileName= */ FILE_AUDIO_RAW_STEREO_48000KHZ,
+            /* modifications...= */ "original",
+            "sample.wav",
+            "highPitch"));
+  }
+
+  @Test
+  public void concatenateTwoAudioItems_withDiffEffectsAndCompositionEffects_completesSuccessfully()
+      throws Exception {
+    Transformer transformer =
+        createTransformerBuilder(muxerFactory, /* enableFallback= */ false).build();
+    MediaItem audioOnlyMediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_RAW);
+    EditedMediaItem twoChannelMediaItem =
+        new EditedMediaItem.Builder(audioOnlyMediaItem)
+            .setRemoveVideo(true)
+            .setEffects(
+                createAudioEffects(
+                    createChannelCountChangingAudioProcessor(/* outputChannelCount= */ 2)))
+            .build();
+    EditedMediaItem oneChannelMediaItem =
+        new EditedMediaItem.Builder(audioOnlyMediaItem)
+            .setRemoveVideo(true)
+            .setEffects(
+                createAudioEffects(
+                    createChannelCountChangingAudioProcessor(/* outputChannelCount= */ 1)))
+            .build();
+    SonicAudioProcessor sonicAudioProcessor = new SonicAudioProcessor();
+    sonicAudioProcessor.setOutputSampleRateHz(48_000);
+    Composition composition =
+        new Composition.Builder(
+                new EditedMediaItemSequence(twoChannelMediaItem, oneChannelMediaItem))
+            .setEffects(createAudioEffects(sonicAudioProcessor))
+            .build();
+
+    transformer.start(composition, outputDir.newFile().getPath());
+    ExportResult exportResult = TransformerTestRunner.runLooper(transformer);
+
+    assertThat(exportResult.sampleRate).isEqualTo(48_000);
+    assertThat(exportResult.channelCount).isEqualTo(2);
+  }
 }
--- a/libraries/transformer/src/test/java/androidx/media3/transformer/TestUtil.java
+++ b/libraries/transformer/src/test/java/androidx/media3/transformer/TestUtil.java
@ -94,6 +94,16 @@ public final class TestUtil {
    return audioProcessor;
  }

+  public static ChannelMixingAudioProcessor createChannelCountChangingAudioProcessor(
+      int outputChannelCount) {
+    ChannelMixingAudioProcessor audioProcessor = new ChannelMixingAudioProcessor();
+    for (int inputChannelCount = 1; inputChannelCount <= 2; inputChannelCount++) {
+      audioProcessor.putChannelMixingMatrix(
+          ChannelMixingMatrix.create(inputChannelCount, outputChannelCount));
+    }
+    return audioProcessor;
+  }
+
  public static String getDumpFileName(String originalFileName, String... modifications) {
    String fileName = DUMP_FILE_OUTPUT_DIRECTORY + '/' + originalFileName + '/';
    if (modifications.length == 0) {